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Welding helmets worn for stick welding are required to have what number shaded lens?

No. 10

Welding helmets worn for stick welding are required to have a No. 10 shaded lens because stick welding produces a high amount of amperage, which can cause intense and harmful light exposure. A lens with a No. 10 shade provides enough darkness to protect the welder's eyes from this bright light, while still allowing enough visibility to see the welding area. Options B, C, and D are incorrect because they do not provide enough darkness and may result in eye damage.

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